Update gradle wrapper

[TacoTheDank]

What does this implement/fix? Please describe.

• Add a gradle wrapper validation action (see here)
• Now that it can be verified, update the gradle wrapper to 6.8.3 using git bash

Does this close any currently open issues? No.

Additional context None needed, I suppose.

Where has this been tested? No testing required.

Btw, you should update your actions/checkout to v2.

[codecov[bot]]

Codecov Report

Merging #343 (9f79afd) into master (0d200c6) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #343   +/-   ##
=========================================
  Coverage     91.09%   91.09%           
  Complexity      860      860           
=========================================
  Files           126      126           
  Lines          2245     2245           
  Branches        221      221           
=========================================
  Hits           2045     2045           
  Misses           74       74           
  Partials        126      126           

[VREMSoftwareDevelopment]

Thank you for PR.

Android Studio version and Android Gradle plugin are updated in lock-step. However the plugin and gradle can run independent of Android Studio and can be updated separately. We rather not to do this, since it may create additional/unknown issues.

Reference to latest Android Gradle plugin.

Duplicate #308

[TacoTheDank]

@VREMSoftwareDevelopment That's actually a different workflow than the one in this PR (so it's not a duplicate). That one seems to be an action for updating the gradle wrapper. However, the one in this PR is for validating the gradle wrapper (as indicated in the provided link, and serves a different purpose.

Thanks anyway :)